Mechanism for converting motion.



No. 670,884. Patented Mar. 26, mm; 4 m. L. KNAPP.

MECHANISM FOR CONVERTING MOTION.

(Application filed Dec. 2,2. 1 900.)

[No Model.) 2 Sheets Sheet l.

M. L. KNAPP. MECHANISM FOR CONVERTING MOTION.

(Application mm Dec. 22, 1900.)

Patented Mar. 26,1901.

(No Modem 2 Sheets-Sheet 2.

awventoz'z WWI mow Q mrzim'b Z,

MOKW Z ME yonmi Paris on, nomumo" vusnmovon. o, c.

UNrthn STATES- PATENT QFFI CE.

MERTON L. KN-APP, or VALPARAISO, INDIANA.

MECHANISM FOR CONVERTING MOTION.

SPECIFICATION forming part of Letters Patent No. 670,884, dated. March 26, 1901.

Application filed December 22, 1900. Serial No. 40.709. \No model.)

To ctLL whom, it may concern.-

Be it known that I, MERTON L. KNAPP, a citizen of the United States, residing at Valparaiso, in the county of Porter and State of Indiana, have invented new and useful Improvements in Mechanisms for Converting Motion, of which the following is a specification.

My invention relates to motion-converting mechanism; and the objects of the same are to provide simple and inexpensive mechanism for converting a reciprocating motion into a rotary motion and to provide means for changingthe plane of the operating-lever from a horizontal to a vertical position and to give either a long arm to the lever or two short arms, one on each side of its fulcrum.

Another object is to provide convenient and efficient mechanism for operating a churn, grindstone, honey-extractor,or other machine of like character by hand and to provide means whereby the operating handle or lever may be readily changed to occupy a different plane of movement and to be adjustable in length, so that a person operating the machine may either sit or stand and may use either one or both hands and may change the direction of movement necessary to operate the machine.

Iattain these objects by means of the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a front elevation of a mechanism made in accordance with my invention with parts removed. 2 is a side elevation of the complete machine. Fig. 3is a sectional view taken through the lever-support, oscillator, and crank. Fig. a is a detail of the oscillating disk for the operating-lever. Fig. 5 is a detail of the crank. Fig. 6 is adetail of the T member and connecting-rod. Fig. 7 is a fragmentary detail of the treadle.

Like numerals designate like parts Wherever they occur in the difierent views.

The numeral 1 designates a frame for supporting a churn or similar device, and 2 2 are the standards or uprights in which the main shaft 3 is journaled.

The numeral 4 designates a rotary churn; but it will be understood that any device to which a rotary motion is to be impart-ed may be substituted for the churn shown. The

these bolts in different positions the length of the crank, and therefore the leverage of the machine, is regulated. A con necting-rod 10, which has a ball 11 formed integral with the end thereof, extends through the socket 8 in the member 8, which socketis rounded out on its under side to accommodate this 1 ball 11. This combination of the rounded .socket 8 and ball 11 forms a universal joint,

which may be taken apart by removing the bolts 9.

Supported on the uprights 2 of the motorframe is acircular frame 12, which is cut by two circular slots 13.

cured in the uprights 2 2 and are fitted with thumb-screws 14.. It will be noted that this construction renders the adjustment of the frame 12 possible after loosening the thumbscrews 14. arms 15 are formed integral with the frame 12, which arms support a yoke 16, which in turn supports an oscillating disk. 17, which I shall term for convenience an oscillator. This oscillator 17 is pivoted on the cross-bar 16 of the yoke, and is thereby constrained to turn about this for an axle. Pivotally mounted in apertures 18, extending at right angles to the cross-bar16 is a T-shaped mem- -ber 19, the arms 19 of which fit the aperture 18, While the stem 19" is longitudinally bored, and thus serves to accommodate the connecting-rod 10, which traverses this bore and is adj ustably secured therein by a setscrew 19, seated in the stem 19. The oscil- Two longitudinally-apertured lator 17 is pierced by two apertures 20 and 21,

23 the oscillator can be actuated and the mo- 75 Projecting through i 1 these slots 13 are two bolts 14, which are seoperated by placing one foot in each stirrupand then pushing first on one foot and then on the ot her.

It is pertinent to remark that for efiicientoperation the point of'intersection of the stem 19 with the arms 16 mustbein the prolongation of the shaft 3. A very little deviation from this position would cause the motion to be'irregular and the mechanism tobind. Another way of, stating itis that the stem 16 must describe a right cone and the dead-center must be at the vertex of said cone and in line with the line of zero rotation of the shaft 3that is, the geometrical axis of the cylinder forming the shaft 3.

In operating my motor the handle is grasped by the arm 23, which isthen rocked back and forth in a horizontal plane. This motion is communicated to the oscillator 17, which turns about, the axis formed by the cross-bar 16 of the yoke. The reciprocating motion of the oscillator is then communicated to the crank-arm 7 through the medium of the T-shaped member 19, which serves as a connecting-rod, and the shaft 3 is rotated in' either direction, as desired.

" From the foregoing it will be obvious that a motor made in accordance with my inven- Each of the arms 2 6'is provided nesses.

ficient in use, permitting many changes in yoke, a shaft provided with a crank, a connecting-rod pivoted at one endto said oscillatoron pintles placed at right angles to the said cross-bar, and attached at the other end to said crank by a universal joint, substantially as described. I

2. In a motion-converter, the combination, substantially as described, of an oscillator, a shaft provided with a crank, a T-shaped member pivotedby its armsin said oscillator, a connectingarod mounted in the stem of said T and connected at one end to said crank by a universal joint.

3. In a motion-converting mechanism, the combination, of a shaft provided with a crank, an oscillatormounted to turn about a fixedaxis, a connecting-rod connected to said crank by a universal joint and pivoted to said oscillator on pintles extending at right anglesto the said axis of said oscillator, and means wherebythe said oscillator may be rocked to .give amovement of rotations to said shaft, substantially as described.

Intestimony whereof I have hereunto set myvhand inpresence oftwosubscribing wit- MERTON L. KNAPP. Witnesses:

JACOB -BREYFOGLE,

F. B. PARKS. 

